Safety removable fastener slide



Nov. 5, 1935. B. PRUZAN' SAFETY REMOVABLE FASTENER SLIDE Filed March 26, 1954 INVENTOR BARNEY PRUZAN BY E ATTORNEY Patented Nov. 5, 1935 UNITED STATES PATENT OFFICE 2,020,159 SAFETY amovnam FASTENEE sum:

Barney Pruzan, Brooklyn, N. Y., assignor to Ranger Fastener Corporation, New York, N. Y.

Application March 26. 1934, Serial No. 717,375

( r 18 Claims. (Cl. 24-205) iect the construction of the upper trapezoidal guide plate in such a manner as to be provided with a, lug adapted to be bent over the end of the latch to hold a peg projecting from the latch in engagement in an aperture in the upper trapezoidal guide plate for pivotally holding the latch in proper operative condition.

Still further the invention also proposes an arrangement whereby bearing pfll ons are formed upon the upper trapezoidal guide plate for pivotally connecting this guide plate with the post.

Still further the inventioncontemplates an arrangement whereby said bearing elements may be either directed upwards or downwards from the said upper trapezoidal guide plate.

Still further the invention also proposes an arrangement whereby the post is adapted to be riveted at its lower end upon the lower trapezoidal guide plate and wherein the post has a certain formation at the top constituting a hook for the latch and a stop for limiting pivotal separation of the trapezoidal guide plates.

Furthermore as another, object-of this invention it is proposed to arrange the latch with a depressed front end adapted to engage in'snap relation vwith the hook on the post for holding the latch in its closed position.

Still further the invention proposes. the construction of an article as mentioned which is simple'and durable and which may be manufactured at .a reasonable cost.

For further comprehension of the invention. and of the objects and advantages thereof, reference will be had to the following description and accompanying drawing, and to the appended claims in which the various novel features of the invention are more particularly set forth.

terial part of this disclosure:

Fig. 1 is a bottom elevationalview of a safety v removable fastener slide constructed according to this invention.

' Fig, 2 is an elevational view lookingin the di rection of the line 2-'-2 of Fig. 1.

In the accompanying drawing forming a ma- Fig. 3 is a plan view of the-safety removable fastener slide.

Fig.4is aviewsimilartoFig. 3butshowing the handle turned through 180 and showing the entire device turned around through 180".

Fig. 5 is an edge elevational view as though looking in the direction of the line 5-5 of Fig. 4 but illustrating the device in its fully opened position.

'Fig.6isasectionalviewtakenonthe line8-6 10 of Fig. 4. 1 v

7 is an end elevational view looking in the direction of the line 'I 'l of Fig. 3. v

8 is an end elevatlonal view looking in the .direction of the line 8-4 of Fig. 4.

Fig. 9 is a horizontal sectional view looking in the direction of the line 9-4 of Fig. 6.

Fig. 10 is a horizontal sectional view looking in the direction of the line lll lll of Fig. 6.

Fig. 11 is a transverse vertical sectional view 20 taken on the line 'u of Fig. 6.

Fig. 12 is a perspective view of the upper trapezoidal guide plate per se.

Fig. 13 is a perspective view of the lower trapezoidal guide plate per se. V

Fig. 14 is a perspective view of the post per se. Fig. 15 is a perspective view of the latch per se.

Fig. 16 is a perspective view of the handle per se.

Fig. 17 is a view similar to Fig. 2 but showing 30 the fastener turned right side up and illustrating a modified form of the invention.

The safety removable fastener slide according to this invention' comprises an upper trapezoidal guide plate l0 having bearing elements ll formed at the large end and at the small end being formed with a lug l2 bendable over an adjacent opening l3. The bearing elements H are formed by turning portions of the material composing the guide plate down and around into tubular forma- 40 tion. A slot I5 is formedabetween the bearing elements II. The edges 16 of the trapezoidal guide plate are tm'ned downwards for the purpose of engaging over the hooks of the hook fastener. A small rectangular opening I1 is also 5 formed in the upper guide plate I for the purpose ofreceiving a projection, upon a handle 19 for the device as hereinafter further described.

The device has a lower trapezoidal guide plate 2|! having its sides 2| turned upwards for coaction with the down turned sides l6 of the upper trapezoidal guide plate. This lower trapezoidal guide plate is formed with an opening 22 into which the lower end 23 of a post 24 for thedeviceisriveted. Thispostflhasanopenlng 25 for a pin 2 adapted to engage through the bearing elements H for pivotally connecting the upper trapezoidal guide plate. The post 24 is provided with a lateral projection 24. acting as a stop to limit downward pivoting of the upper trapezoidal guide plate. Furthermore the post 24 has a notch 21 producing a hook 29 which is adapted to ccact with a latch element 29 as hereinafter further described.

The latch element 29 is a small strip of metal which has a peg" stamped out from one end. This peg 90 is adapted to engage into the opening I3 for the pivotal mounting of the latch element. The lug I2 is bent over the end of the latch element for preventing the disengagement of the peg 30 from the opening II. The intermediate portion of the latch 29 is formed with a transverse upward bent portion 3| beneath which the rod portion 33 of the handle l9 passes. The front end of the latch 29 is formed with a longitudinal depressed portion 32 adapted to engage the lower side of the hook 29 in snap" fashion.

In Figs. 1-3 inclusive the fastening slide is shown in the closed position in which position it is adapted to be moved forwards or rearwards for closing or opening conventional hook fasteners. The fastener slide may be opened for disengagement from the hooks of the fastener construction in the following manner: The handle l9 should be pivoted from the position illustrated in Fig. 3 to the position illustrated in Fig. 4. In the position illustrated in Fig. 3 the prong l8 of the handlewengages into the opening I! of the trapezoidal piece which prevents operation of the latch 29. In the pivoted position of the handle, that is, the position illustrated in Fig. 4 the prong I9 is now directed upwards out from the opening I I. The handle l9 may now be moved to cause the latch 29 to pivot free from the hook 28 which engages it. The latch 29 has a slight projection 34 at its free end which is adapted to engage the base of the slot 21 necessitating pivoting of the latch in one direction for disengaging the latch from the hook 29. It will be noticed that assuming the latch 29 illustrated in Fig. 15 to enter the notch 21 of the post shewn in Fig. 14, than the latch cannot be pivoted anti-clockwise of the projection 34 and must necessarily be pivoted clockwise for the disengagement of the latch from the hook.

After the handle I9 is moved to disengage the latch 29 from the hook 28 then the trapezoidal guide plates may be pivoted open. The latch 29 may be pivoted through a small angle only just sumcient for the front end of it to clear the hook 28. The reason for this limited pivoting is the fact that the pivoted end of the latch is formed with aflat end 25 adapted to engage against the bend of the lug l2 limiting the pivcting of the latchthrough the small angle. In Fig. 4 the dot and dash lines illustrate the limited position of pivoting of the latch 29. The trapezoidal plates may now be pivoted open upon the pin 20 to the limited position illustrated in Fig. 5.

is moved to r'eengage thefront end of the latch 29 beneath the hook 29. The latch will snap into locked position when the. recess 32 engages beneath the hook 28. The hook 28 is of a width substantially equal to the width of the recess 32. Next the'handle II should be pivoted through 180 to reengage the prong l8 into the opening 11. The slide is now latched in the closed position.

In Fig. 17 a modified form of the invention has 10 been disclosed which distinguishes from the previous form merely in the construction of the bearing elements ll'-. These bearing elements distinguish from the bearing elements ll merely in the fact that they are turned upwards of the 15 upper trapezoidal guide plate distinguished from the prior construction in which they were turned downwards. In other respects this form of the inventionis similar to the previous form and corresponding parts may be recognized by the same 1) reference numerals.

While I have shown and described the preferred embodiment of my invention, it is to be understood that I do not limit myself to the precise construction herein disclosed and the right is 25 reserved to all changes and modifications com.- ing within the scope of the invention as defined in the appended claims.

fiiaving thus described my invention, what I as new and desire to. secure by United 90 States Letters Patent is: I

l. A safety removable fastener, comprising an upper trapezoidal guide plate having its large end formed with hearing elements and the small end formed with an opening and a lug bendable over 86 said opening. a lower trapezoidal guide plate associated with said upper trapezoidal guide plate, a post riveted or. said lower trapezoidal guide plate and pivotaily connected with said bearing elements holding said guide plates in superimposed 40 positions and formed with a top hook for a latch element and for acting as a stop to limit hinging of the guide plates to an open position, a latch element having a peg at one end engaging said opening and held swivelly with said lug bent down 5 engaging the top thereof, said latch element having an intermediate transverse arch for a transverse bar of a handle, and said latch element being engageablebeneath said hook, and a handle with a transverse bar engaging beneath said 5 arch.

2. A safety removable fastener, comprising an upper trapezoidal guide plate having its largeend formed with bearing elements and the small end formed with an opening and a lug bendable over said opening, a lower trapezoidal guide plate associated with said upper trapezoidal guide plate,

a post riveted on said lower trapezoidal giiide plate and pivotally'connected with said bearing elements holding said guide plates in superimw posed positions and formed with a top hook for I a latch element and for acting as a stop to limit hinging of the guide plates to an open position, a latch element having a peg at one end engaging said opening and held swivelly with said lug bent a down engaging the top thereof, said latch element having an intermediate transverse arch for a transverse bar of a handle, and said latch element being engageable beneath said hook, and a handle with a transverse bar engaging beneath said arch, said bearing elements constituting portions of the guide plate bent around into tubular form.

3. A safety removable fastener, comprising an upper trapezoidal gui'de plate having its large end formed with bearing elements and the small end formed with an opening and a lug bendable over said opening,.a lower trapezoidal guide plate associated with said upper trapezoidal guide plate,a post riveted on said lower trapezoidal guide plate .and pivotally' connected with said bearing elements holding said. guide plates in superimposed positions and formed-with a top hook for a latch element and for acting as a stop to limit hinging of the guide plates to an open position, a latch element having a peg at one end engaging said opening and held swivelly with said lug bent down engaging the top thereof, said latch element having an intermediate transverse arch for a transverse bar of a handle, and said latch element being engageable beneath said hook, and a'handle with a transverse bar engaging beneath said arch, said bearing elements constituting portions of the guide plate bent around into tubular tom, and a slot formed in said upper guide plate between said.

bearing elements and adapted to have its base engage said hook upon the post for limiting the opening of the upper guide plate relative to the lower guide plate.

4. A safety removable fastener, comprising an upper trapezoidal guide plate having its large end formed with bearing elements and the small end formed with an opening and a lug bendable over said opening, a lower trapezoidal guide plate associated with said upper trapezoidal guide plate, a. post riveted on said lower trapezoidal guide plate and pivotally connected with said bearing elements holding said guide plates in i superimposed positions and formed with a top ments holding said guide plates in superimposed- '55 hook for a latch element and for acting as a stop to limit hinging of the guide plates to an open position, a latch element having a peg at one end engaging said opening and held swivelly with said lug bent down engagin the top thereof, said latch element having an intermediate transverse arch for a transverse bar of a handle, and said latch element being engageable beneath said hook, and a handle with a transverse bar engaging beneath said arch, said post having a surface adapted to act as a. stop for limiting closing of-said guide plates relative to each other.

5. A safety removable fastener, comprising an upper trapezoidal guide plate having its large end formed with hearing elements and the small end formed with an'opening and a lug bendable over said opening, a lower trapezoidal guide plate associated with said upper trapezoidal guide plate, a post riveted on said lower trapezoidal guide'plate and pivotally connected with said bearing elepositions and formed with a top hook for a latch element and for acting as a stop to limit hinging of the guide plates to an open'position, a latch element having a peg at one and engaging said opening and held swivlly with said lug bent down engaging the top thereof, said latch element having an intermediate transverse arch for a transverse bar of a handle, and said latch element being engageable beneath said hook, and a handle with a transverse bar engaging beneath said arch, a

pin engaging through said bearing elements and said post for pivotally connecting the upper guide plate with the lower guide plate.

6. A safety removable fastener, comprising an upper trapezoidal guide plate having its large end formed with hearing elements and the mall end formed with an opening and a. log bendable over said opening, a lower trapezoidal guide plate associated with said upper trapezoidal guide plate, a post riveted on said lower trapezoidal guide plate and pivotally conr cted with said bearing ele- -ments holding said guide plates in superimposed positions and formed with a top hookfor a latch element and for acting as a stop to limit hinging of the guide plates to an open position, a. latch element having apeg at one end engaging said 5 opening and held swivelly with said lug bent down engaging the top thereof, said latch element having an intermediate transverse arch for a transverse bar of a handle, and said latch element being cngageable beneath said hook, and a handle 10 with a transverse bar engaging beneath said arch, said peg in the latch being formed by a portion of the metal stamped downwards from the material of the latch.

7. A safety removable fastener, comprising an 15 over said opening, a lower trapezoidal guide" plate associated with said upper trapezoidal guide 20 plate, a post riveted on said lower trapezoidal guide plate and pivotally connected with said bearing elements holding said guide plates'in superimposed positions and formed with atop hook for a. latch element and for acting as a 25 stop to limit hinging of the guide plates to an. open position, a latch element having a peg at one'end engaging said opening and held swivelly with said lug bent down engaging the top there of, said latch element having an intermediate 30 transverse arch for a transverse bar of a handle, and said latch element beingengageable beneath said hook, and a handle with a. transverse bar engaging beneath said arch, the front end of the latch being formed with a longitudinal reeesstii of a width corresponding with the width of said hook for snapping engagement by said hook.

8. A safety removable fastener, comprising an upper trapezoidal guide plate having its large and formed with hearing elements and the 40 small end formed with an opening and a lug bendable over said opening, a lower trapezoidal guide plate amociated with said upper trapezoidal guide plate, a post riveted on said lower trapezoidal guide plate and pivotally connected 5 with said bearing elements holding said guide plates in superimposed positions and formed with a top hook for a. latch element and for acting as a. stop to limit hinging of the guide plates to an open position, a latch element having a 5 peg at one end engaging said opening and heldswivelly with said lug bent down engaging the i top thereof, said latch element having an interupper trapezoidal guide'plate having its large end formed with hearing elements and the small end formed with an opening and'a lug bendable over said] opening, a. lower trapezoidal iguide plate associated with said upper trapezoidal guide 70' plate, a post riveted on said lower trapezoidal guide plate an'dpivotally connected with said bearing elements holding said guide plates in superimposed positions and formed with a. top

*hook for a latch element and for acting as a stop to limit hinging of the guide plates to an open position, a latch element having a peg at one 'end engaging said opening and held swivelly with said lug bent down engaging the top thereof, said latch element having an intermediate transverse arch for a transverse bar of a handle,

and said latch element being engageable beneath said hook, and a handle with a transverse bar en-' hook for snapping engagement by said hook, and

'end formed with an opening and a lug bendable over said opening, the upper guide plate having a second opening a lower trapezoidal guide plate associated with said upper trapezoidal guide plate, a post riveted on said lower trapezoidal guide plate and pivotally' connected with said bearing elements holding said guide plates in superimposed positions and formed with a top hook for a latch element and for acting as a stop [to limit hinging of the guide plates to an open position, a latch element having a peg at one end engaging said opening and held swivelly with said lug bent down engaging the top thereof, said .lat'ch element having an intermediate transverse arch for a transverse bar of a handle, and said lath element being engageable beneath said hook, and a handle with a transverse bar engaging beneath said arch, andhaving a prong bent downwards and engaging in the second opening in said upper trapezoidal guide plate.

11. In a safety removable fastener, a pair of trapezoidal guide plates hingedly connected together, one of said plates being formed with an opening and a lug bendable over said opening, a-

, opening and a lug bendable over said opening, a

latch element having a peg at oneend received in said opening, and held swivelly with said lug bent down engaging the top thereof, and a hook plate and engageable by said latch element, said latch element having an intermediate transverse arch for a transverse bar of a handle, and a handle with a transverse bar engaging beneath said arch;

13. In a safety removable fastenerfa pair of trapezoidal guide plates hingedly connected together, one of said plates being formed with an opening and a lug bendable over said opening, a latch element having a peg at one end received in said opening, and held swivelly with said lug bent down engaging the top thereof, a hook on one of said plates projecting through the other plate and engageable by said latch element, and a post mounted upon ore of said plates at the hinged area thereof and projecting through the other of the plates, said hook being a projection onthe end of said post which is formed into said book.

14. In a safety removable fastener, a pair of trapezoidal guide plates hingedly connected to- 5 gether, one of said plates being formed with an opening and a lug bendable over said opening, a latch element having a peg at one end received in said opening, and held swivelly with said lug bent down engagingthe top thereof, a hook on one of said plates projecting through the other plate and engageable by said latch element, and a post mounted upon one of said plates at the hinged area thereof and projecting through the other of the plates, .said hook being a projection on the end of said post which is formed into said hook, said hook being engageable against a portion of one of said plates when the plates are pivoted apart for acting as a stop to limit pivoting of the plates to an open position. 15. In a safety removable fastener, a pair of trapezoidal guide plates hingedly connected together, one of said plates being formed with an opening and a lug bendable over said opening, a

latch element having a peg at one end received I in said opening, and held swivelly with said lug bent down engaging the top thereof, and a hook on one of said plates projecting through the, other plate and engageable by a latch portion on said latch element, said latch portion being formed 80 by a portion of the metal stamped downwards from the material of the latch element.

16. In a safety removablefastener, a pair of trapezoidal guide plates hingedly connected together, one of said plates beingf'ormed with an opening and a lug bendable over said opening, a latch element having a peg at one end received in said opening, and held swivelly with said 'lug bent down engaging the top thereof, and a hook on one of said plates projecting through the oth- 40 er plate and engageable' by said latch element, the front end of the latch element being formed with a longitudinal recess of a width correspond-' ing with the width of. said hook for snap engagement, by said hook.

17. In a safety removable fastener, a pair of trapezoidal guide plates hingedly connected together, one of said plates being formed with an opening and a lug bendable over said opening, a

latch element having a peg at one endand received in said opening, and held swivelly with said lug bent down engaging the top thereof, and a hook on one of said plates projecting through .the other plate, and engageable by saidlatch.

element, the front end of the latch element being formed with a longitudinal recess of a width corresponding with thewidth of said hook for snap engagement by said hook and the front end of the latch being formed with a projection limiting pivoting of the latch in one direction for 00 disengagement from the hoolr.

18. In a safety removable fastener, a pair of trapezoidal guide plates hingedly connected together, one of said plates being formed with an opening anda lug bendable over said opening, a as latch element having a peg at one end received ,in said opening, and held swivelly with said; lug bent down engaging the top thereof, and a hook portions adapted to engage the bend of said lug I for limiting pivoting of the latch.

BARNEY PRUZAN. 

